S63 Valve Guides 45eX Each set is crafted from

Each set is crafted from mandrel-bent T304 stainless steel and features CNC velocity stack flanges at the turbo mount

this BMW radiator improves heat dissipation

This kit is engineered to replace BMW part #11122165470 and is compatible with BMW N55B30 engines found in a range of models

or high-horsepower forced induction applications

as they require 145 mm Rods

S63 Valve Guides 45eX Each set is crafted fromOur HD bronze valve guides for the BMW S63 engine (found in various M5 models) are engineered for high performance, high boost applications where OEM materials reach their limits. These replace the factory BMW valve guides in the cylinder head (intake and exhaust guide assemblies). Built to withstand extreme heat, increased valve spring pressures, and sustained high RPM operation, these guides deliver exceptional stability and durability under